Whether your basement is a catch-all storage zone or a cozy living space, it deserves just as much attention as the rest of your home. Don’t put off basement window replacement—it’s a simple upgrade that can boost energy efficiency, improve security, and even add to your home’s curb appeal.

If you’re new to DIY home renovations, a basement project is a great place to start. Most guests won’t see the finished product, and you get the chance to learn and practice basic renovation skills. Follow our guide to install a new basement window you’ll be proud of.

When Should You Replace Your Basement Window?

If your basement window needs replacing, you’ve probably noticed an obvious sign or two, such as a window frame that’s rotting, sagging, or cracked. Other indicators of an old basement window include:

Fog between the interior and exterior glass panes

Difficulty opening and closing the window

Water leaking into the floors or walls surrounding the window

Old or damaged basement windows aren’t just an eyesore—they can lead to poor energy efficiency and insulation, water damage, and leaks. A damaged window can also be a security issue since it’s easier for intruders to break into a weakened frame and glass. If your window is cracked or shattered, replace the window glass immediately.

Although basement projects are likely at the bottom of your to-do list, there are many benefits to upgrading and replacing your old basement window.

A newly installed window is more energy-efficient and durable, better protecting your basement from rain, wind, humidity, and other outside elements. Depending on the window style you select, it can even add more natural light to your basement.

Replacing your basement window can also increase your home’s 

Choosing the Right Replacement Basement Window

Hopper, sliding, casement, and egress windows are some of the most popular basement window styles. When selecting the right basement window replacement, consider the surrounding space, the importance of a clear outside view, ventilation qualities, and your current window’s frame.

swing open into the room from the top and are hinged at the bottom. Basement hopper windows are great for ventilation and natural light, and the tightly sealed frame is very energy efficient. The main drawback is the obstructed view when the window is open, but this may not be a dealbreaker for many homeowners.

slide open horizontally on one side. They offer a clear view and are easy to open and close. Since sliding windows don’t fully open, they have limited ventilation.

open outwardly or inwardly like a door and are hinged on one side. They offer the best of both worlds—when fully open, there’s excellent ventilation, but the window’s tight seal keeps air from leaking in or out when closed. Casement windows offer clear views and plenty of natural light but are more expensive than other styles.

are larger than most windows and open fully. An egress window is required as an emergency exit for basements used as a bedroom or living area. An egress window must open into a window well for easier outside evacuation. They have great ventilation, clear views, and plenty of natural light. Their biggest drawback is their larger size, which requires more maintenance and upkeep than standard windows. Always check your state and local construction laws for specific size requirements, but the general requirements for egress windows are:

The sill must be no more than 44 inches above the floor

Once you’ve chosen the type of basement window, it’s time to select the frame. Common window frame materials are vinyl, aluminum, and wood.

Vinyl is a durable, long-lasting material that’s simple to maintain.

Cons of vinyl windows

Pros of vinyl windows

Aluminum is a lightweight yet durable material that’s also easy to maintain.

Cons of aluminum windows

Pros of aluminum windows

Wood offers a timeless look with strong natural insulation. 

Cons of wood windows

Pros of wood windows

You have one more thing to select: the window glass pane. Glass panes play a significant role in energy efficiency and insulation, so don’t take basement window glass replacement lightly.

Double-pane and triple-pane glass help reduce heat transfer, keeping heat inside during the winter while preventing it from seeping in during the warmer months. Still trying to decide which option is best for your basement? Let’s compare the features of each.

Cons of double-pane glass

Pros of double-pane glass

Cons of triple-pane glass

Pros of triple-pane glass

Tools and Materials Needed for Basement Window Replacement

If you’re going the do-it-yourself route when replacing your basement window, make sure you have all the right tools before beginning your project. You can find most things you’ll need at your local big box hardware store.

to measure the exact width, height, and diagonals of the window opening so your new window fits correctly

to cut through the old window frame (optional)

to remove your old window, frame, and nails without damaging the area

for applying caulk before and after installing the new window to seal cracks and prevent moisture damage

 to determine the window is installed evenly both horizontally and vertically

 materials, such as spray foam for larger gaps around the frame

, including window flashing tape and waterproof caulk

 to make sure the window fits correctly, is level, and opens and closes smoothly

 to protect your hands when removing old wood, debris, and glass

 for protecting your eyes from any flying dust, glass shards, and debris when removing your old window

to prevent inhaling dust, especially since old window material may contain asbestos or lead paint

Step-by-Step Guide to Replacing a Basement Window

 Measure and Choose the Correct Window Size

Before removing your old basement window, you’ll need to measure the window opening. These measurements are critical for choosing the correct new 

Follow these steps to accurately measure the window opening:

: Measure the window opening width at the top, middle, and bottom. Note the smallest measurement to make sure the window fits the narrowest area.

: Measure the window opening height on the left, middle, and right sides. Note the smallest measurement here, too.

: Measure the sill depth from the interior trim to the exterior trim. Most modern windows have a depth of 3.5 to 5 inches.

First, you’ll need to remove the window sash. This is the movable part of the window that holds the glass panes within the frame. Use your pry bar to remove the interior stops (the window trim pieces that keep the sash in place), then tilt the sash toward you and carefully lift it out of the frame.

Next, you’ll remove any old caulk with a razor blade or utility knife before removing the frame. Once the caulk is cleared, use your pry bar and hammer to remove the old frame, remaining glass, and nails.

You may need a reciprocating saw to cut through the frame, depending on the condition of your previous window.

Thoroughly clear the window opening of any leftover caulk, debris, or dirt. A spotless opening makes it easier to fit and use your new window.

 Install the New Window and Secure It in Place

Place window flashing around the opening before installing your window. Window flashing is a thick, tar-like tape to help prevent water from seeping in.

Place your window in the opening and install shims to make sure it’s plumb (straight up and down) and level. Shims must be installed from the window’s interior and exterior to keep it level.

Finally, you’ll securely install your new window by drilling concrete screws into the frame.

Don’t overtighten the screws. Your window won’t open and close properly if the screws are too tight.

Properly sealing and insulating your new window creates an energy-efficient barrier that protects against drafts and water damage. Use spray foam to fill larger side gaps and add some extra insulation, then caulk every seam around the window to seal it.

 Finishing Touches and Checking for Proper Fit

Now that your new basement window is officially installed and sealed, all that’s left are the finishing touches:

Confirm the window is square by measuring diagonally from each corner—equal diagonal measurements mean it’s square

Caulk any remaining cracks or gaps in the window seal

Check that the window opens and closes smoothly

It’s difficult to calculate an exact basement 

. Use the below price estimates to start your research, but the final window cost will depend on the style, size, frame, glass, and retailer. Professional installation costs will also vary based on your location, project scope, and window style and materials.

Common Mistakes to Avoid When Replacing a Basement Window

, you may hit a few bumps along the way. But the more you prepare, the less likely you’ll have setbacks. Avoid these more common mistakes when replacing your basement window.

Correctly measuring the space for your new basement window is a crucial step. An inaccurate measurement leads to a poor fit, which can cause foggy windows, energy loss, water damage, seal failure, and trouble opening and closing the window.

Learn how to replace a basement window with this step-by-step guide. Get expert tips on materials, costs, and installation for a secure, energy-efficient upgrade.

How to Replace a Basement Window: A Homeowner’s Guide

Imagine being trapped in a room during an emergency with no way out. Fires, gas leaks, and other home disasters can spread in minutes, leaving little time to react. That’s why having a quick escape route is essential—not just for your safety, but so first responders can reach you and your loved ones if needed.

This is where egress windows come in. They provide a safe exit, meet legal requirements, and offer additional benefits like better ventilation and natural light. If your home doesn’t have one, you might be putting your family at risk without even realizing it.

This guide covers everything you need to know about egress windows, including safety requirements, costs, benefits, budgeting tips, and how to find a qualified contractor for installation.

Egress windows, sometimes called exit windows, escape windows, or EEROs (emergency escape and rescue openings), are specially designed openings that offer an escape route in case of an emergency.

, any room where someone sleeps, as well as the basement living area, must have at least one egress window or door. These regulations ensure occupants can safely exit during a fire or other emergency and allow first responders easy access.

Maximum sill height: 44 inches from the floor

For basement installations, an egress window requires a safe exit space – often called an escape well – measuring at least 9 square feet of space and a depth of 36 inches or more. If the well is deeper than 44 inches, a ladder or steps must be included for safety. It is crucial to adhere to all codes and requirements when updating or adding features to your home. Doing so not only ensures your and your family's safety but also assists future homeowners and may impact the sale of your home.

Why Are Egress Windows Important For Home Safety?

Egress windows are designed to enhance safety by offering a quick and accessible escape route. Blocked exits can make evacuation extremely difficult or impossible. Egress windows reduce the risk of being trapped inside, especially in bedrooms and basements, where alternative exits may be limited.

 Egress windows allow firefighters and rescue teams to enter quickly during an emergency

 Egress windows provide a clear escape route before smoke becomes overwhelming

 Egress windows ensure basement and bedroom spaces meet safety standards

The International Residential Code (IRC) sets rules for home design and structure, including window specifications, mechanical systems, plumbing, and electrical work.

According to IRC regulations, egress windows are required in every bedroom, basement, and habitable attic space. Local jurisdictions may have additional codes, so it’s important to check with local authorities before starting renovations.

Here are some important legal requirements for egress windows:

All sleeping areas must have an egress window that meets compliance standards

An egress window is required when finishing a basement or adding a bedroom

All egress windows must open easily without specialized tools or excessive force

 is updated every three years to incorporate changing safety standards. Before starting any renovations, it’s important to check the latest code updates to ensure your home meets all safety and compliance requirements.

Beyond safety, egress windows offer several benefits that can make your home more comfortable, functional, and inviting.

Basements and bedrooms often feel dark, cramped, and uninviting. An egress window lets in natural light, making spaces feel larger, brighter, and more open. Beyond aesthetics, natural light can boost your mood, 

increase productivity, and support overall health

Proper airflow is crucial in below-ground rooms. Egress windows promote fresh air circulation, helping to reduce moisture buildup, prevent mold growth, and improve indoor air quality. Better ventilation can also contribute to a healthier home environment, especially in humid climates.

Homes with code-compliant basement bedrooms tend to have higher resale values. Buyers are more likely to invest in a house that meets safety regulations and offers the flexibility of a legal basement living space. Even if the basement isn’t used as a bedroom, having the option to convert it adds significant value.

Building codes and egress window requirements can change over time, so it’s essential to stay informed. Before renovating or selling a home, check with a realtor or review state and county regulations to ensure compliance.

Egress windows can help lower energy costs by increasing natural light and improving airflow. With more daylight streaming in, homeowners rely less on artificial lighting. Better ventilation reduces the strain on heating and cooling systems, leading to lower energy consumption and reduced utility bills over time.

The cost of installing an egress window in your home can vary based on several different factors, including:

Egress window prices vary based on design, functionality, and installation complexity. Here’s what to expect by type:

: Compact and moderately priced, casement egress windows are the most popular style for homeowners

These traditional styles have vertically sliding sashes. To comply with egress standards, they typically need to be larger, potentially increasing material and installation costs ​

: Operating like sliding doors, these windows require ample horizontal space to meet egress dimensions, upping both the window's size and price

The cost differs depending on whether the window is installed in a bedroom, attic, basement, or other living space. Above-ground installations are generally less complex and more affordable than below-ground ones, which may require additional excavation and reinforcements.

Labor and material costs will drastically change if you need to cut through any concrete. Other modifications that can influence the overall price tag include:

 Anything below ground needs a 36-inch deep window well, which allows escape clearance

 Depending on the location, you may need gravel or a drain pipe to mitigate any water accumulation

Structural reinforcements may be needed to secure the window's integrity

 Inspections or approvals may be required before work can be completed

Your personal style preference, sizing needs, and location can all dictate the overall price of installing a new egress window. With any type of home upgrade or renovation, we always recommend getting at least two different quotes before moving forward.

Average Cost of Installing Egress Windows

Several factors play into the overall cost of installing an egress window, However, the following national averages provide a general idea of what to expect:

$7,500+ (depends on material and complexity)

Hiring an experienced professional ensures your egress window meets safety and code requirements. Here are some key tips for selecting a contractor:

: Choose a contractor familiar with local building codes.

: Compare pricing and services to fit your budget.

 can offer invaluable insight into a contractor’s dependability and quality of work.

: Some areas require permits before installation can begin.

No matter the final cost, planning ahead can help you stay within budget. Here are a few tips:

 Research different installers, request itemized quotes, and negotiate for the best value.

 Choose a durable, well-made window to avoid costly replacements down the line.

 A local referral may lead to a discount or trusted contractor.

 Contractors may offer lower rates in late fall or winter when demand is lower.

Prefabricated egress windows cost less than custom-built ones and still meet code requirements. DIY installation can save money but requires careful planning.

Some manufacturers, utility companies, or local governments offer rebates that can reduce costs.

Home improvement loans, payment plans, or energy-efficiency grants may be available to help fund your project.

Egress windows are more than just a building code requirement—they’re an essential safety feature that can protect your home and family. They provide a lifesaving escape route while also enhancing ventilation, natural light, and property value.

Whether you're finishing a basement or upgrading a bedroom, installing an egress window is an investment in both safety and home improvement. Before getting started, check local building codes and work with a qualified professional to ensure compliance and long-term peace of mind.

Learn why every home needs an egress window for safety and compliance. Learn about their benefits, legal requirements, and installation tips in this comprehensive guide.

Why Every Home Needs An Egress Window: A Safety Guide

Windows play a crucial role in a home’s comfort, energy efficiency, and security. Over time, aging or inefficient windows can lead to higher energy bills, drafts, and even potential structural issues. Replacing them not only boosts a home’s appearance but can also lower heating and cooling costs, let in more natural light, and 

However, window replacement is a significant investment, and understanding the costs is key to effective budgeting. Factors like window style, frame material, and installation complexity all contribute to pricing variations.

This guide covers window replacement costs, what affects prices, and expert tips to help you make the best decision for your home.

So, how much does it cost to replace windows? In 2025, the national average is $750 per window, but average prices range from $600 to $1,300 depending on window type, material, and labor.

Costs can rise fast for homeowners replacing multiple windows, but discounts may apply for bulk installations. The final cost will depend on many factors, including the window style, frame material, size, and more.

Factors That Affect Window Replacement Prices

The total cost of replacing windows depends on several key factors.

The style of your window will impact the overall price. Window styles include arched, awning, bay, bow, casement, picture, single-hung, double-hung, and more. Bay and bow windows tend to be the most expensive due to their size and complexity.

Bigger windows require more materials and labor, increasing overall costs. A standard bathroom window is significantly cheaper than a large living room or floor-to-ceiling window.

Your choice of window frame affects both cost and durability:

 Affordable but not very energy-efficient.

 A cost-effective, low-maintenance option.

 Classic look, but requires maintenance and is more expensive.

 Highly durable and energy-efficient, but pricier.

 Blends the benefits of multiple materials but varies in quality.

There are several different glass types to choose from:

: More panes offer better insulation but increase cost.

Low-E coatings and gas fills boost efficiency

 and cost an extra $30 to $1,000 per window.

: Advanced technology adds security and convenience but raises costs.

Replacing all the windows in a house can be cheaper per unit for materials and labor. In contrast, replacing just one window usually costs more.

 Removing and disposing of existing windows can add $50–$150 per unit.

 Cutting into walls or reframing increases costs.

 Accessing hard-to-reach windows may require specialized equipment or extra labor.

Obtaining a permit may be required, and costs vary depending on the number and size of the windows, their structural modifications, and local code requirements.

Here's a breakdown of what you can expect for window replacement costs by style:

The cost of a window can depend on the style you choose. You might pay a few hundred dollars per window or thousands.

Window material is also a huge factor in overall window replacement costs. Here are the average costs, outlined from cheapest material to most expensive:


When picking a frame material, we recommend weighing the cost against looks, durability, customization, and energy efficiency.

With an average window replacement cost of $750 per window in 2025 and 8 to 22 windows in most U.S. homes, the typical price for replacing all the windows falls between $6,000 and $16,500.

The total cost depends on how many windows you replace. Here’s what to expect:

Many contractors offer discounts for bulk replacements, so if multiple windows are being replaced, be sure to negotiate pricing.

Financing Options for Window Replacements

If paying out of pocket isn’t feasible, consider these financing options:

 Home equity is used for financing with lower interest rates.

 A temporary 0% interest promotional period gives you time to pay down your debt without incurring interest.

Some window companies offer in-house payment plans.

Federal and state programs offer tax credits for qualifying windows.

 is available for specific windows installed from 2023 to December 2032. The credit is limited to $600 annually for windows and up to $500 for two or more doors.

Check with your local energy department to understand available options and how to qualify.

Some credits and rebates apply only to specific products from certain manufacturers. Save the product identification number (PIN) for tax submission.

9 Cost-Saving Tips for Window Replacement

There are a few ways to reduce the cost of replacing a window. Here are nine cost-saving tips to consider:

Replacing multiple windows at once can lower per-unit costs.

 Custom windows are significantly more expensive.

Contractors may offer late fall or winter discounts.

 Check for local energy-efficiency incentives.

 Get estimates from at least three contractors.

 If you’re experienced, installing simple windows yourself can save labor costs.

 Window companies may offer 0% interest/financing assistance.

Many contractors are willing to adjust pricing or include additional services if you ask.

Window replacement is a wise investment that improves energy efficiency, enhances curb appeal, and increases home value. Costs depend on window style, material, and labor, so careful planning helps homeowners stick to their budget.

Before deciding, get multiple quotes, explore financing options, and check for rebates. Whether replacing one window or upgrading your entire home, making an informed choice ensures long-term savings and comfort.

Discover window replacement costs in 2025, including average prices, factors affecting costs, and how to budget for your project.

How to Replace a Basement Window: A Homeowner’s Guide

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How to Replace a Basement Window: A Homeowner’s Guide

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